Sanchez has scored 20 goals in all competitions for Arsenal this season (Photo by Alex Grimm/Bongarts/Getty Images)

A group of Arsenal fans got more than they bargained for on an official tour of the Emirates Stadium after they were reportedly told Alexis Sanchez is certain to leave the north London club this summer.

The Chile international has enjoyed a superb season on a personal level, scoring 20 goals in all competitions, but has grown visibly dismayed in recent weeks as Arsenal’s form has deteriorated rapidly.

With Premier League title hopes obliterated following a 3-1 defeat to Chelsea earlier this month, the Gunners are also on the verge of another premature exit from Europe after the embarrassing 5-1 defeat at Bayern Munich a fortnight ago.

Sanchez is a reported target of PSG, Chelsea and Juventus. (Picture: Getty)

Sanchez’s current contract expires in the summer of 2018 and although Arsenal publicly maintain they are confident the former Barcelona forward will commit his long-term future to the club, talks have stalled.